The filesystem has to be mounted before you can access it in a file manager/terminal.
Do this as root.
mount -t smbfs -o username=yoursmbusernamehere //remotemachineip/remotesharename /mnt/smb
then you will probably be prompted for a password
now if you open /mnt/smb in konqueror you should be able to access it.
check out http://www.tldp.org
for a howto on smb.